Nissan Murano: Basic Inspection / Throttle Valve Closed Position Learning
Description
Throttle Valve Closed Position Learning is a function of ECM to learn the fully closed position of the throttle valve by monitoring the throttle position sensor output signal. It must be performed each time the harness connector of electric throttle control actuator or ECM is disconnected or electric throttle control actuator is cleaned.
For details, refer to Work Procedure.
Work Procedure
START
WITH CONSULT
-
Turn ignition switch ON.
-
Select “CLSD THL POS LEARN” in “WORK SUPPORT” mode.
-
Follow the instructions on the CONSULT display.
-
Turn ignition switch OFF and wait at least 10 seconds.
Check that throttle valve moves during the above 10 seconds by confirming the operating sound.
WITHOUT CONSULT
-
Start the engine.
NOTE:
Coolant temperature is less than 25°C (77°F) before engine starts.
-
Warm up the engine until engine coolant temperature reaches 65°C (149°F).
-
Turn ignition switch OFF and wait at least 10 seconds.
NOTE:
Check that throttle valve moves during the above 10 seconds by confirming the operating sound.
>>
END
Description
Accelerator Pedal Released Position Learning is a function of ECM to learn the fully released position of the accelerator pedal by monitoring the accelerator pedal position sensor output signal...
Description
Idle Air Volume Learning is a function of ECM to learn the idle air volume that keeps engine idle speed within the specific range. It must be performed under the following conditions:
Each time the electric throttle control actuator or ECM is replaced...
Other information:
DTC Description
DTC DETECTION LOGIC DTC
CONSULT screen terms
(Trouble diagnosis content)
DTC detection condition
P2096
POST CAT FUEL TRIM SYS B1
(Post catalyst fuel trim system too lean bank 1)
Diagnosis condition
—
Signal (terminal)
—
Threshold
The output voltage computed by ECM from the A/F sensor 1 signal is shifts to the lean side for a specified period
Diagnosis delay time
—
P2097
POST CAT FUEL TRIM SYS B1
(Post catalyst fuel trim system too rich bank 1)
Diagnosis condition
—
Signal (terminal)
—
Threshold
The A/F signal computed by ECM from the A/F sensor 1 signal is shifts to the rich side for a specified period
Diagnosis delay time
—
P2098
POST CAT FUEL TRIM SYS B2
(Post catalyst fuel trim system too lean bank 2)
Diagnosis condition
—
Signal (terminal)
—
Threshold
The output voltage computed by ECM from the A/F sensor 1 signal is shifts to the lean side for a specified period
Diagnosis delay time
—
P2099
POST CAT FUEL TRIM SYS B2
(Post catalyst fuel trim system too rich bank 2)
Diagnosis condition
—
Signal (terminal)
—
Threshold
The A/F signal computed by ECM from the A/F sensor 1 signal is shifts to the rich side for a specified period
Diagnosis delay time
—
POSSIBLE CAUSEDTC P2096
A/F sensor 1 (bank 1)
A/F sensor 1 heater
Heated oxygen sensor 2 (bank 1)
Fuel pressure
Fuel injector
Intake air leaks
Exhaust gas leaks
DTC P2097
A/F sensor 1 (bank 1)
A/F sensor 1 heater
Heated oxygen sensor 2 (bank 1)
Fuel pressure
Fuel injector
Intake air leaks
Exhaust gas leaks
DTC P2098
A/F sensor 1 (bank 2)
A/F sensor 1 heater
Heated oxygen sensor 2 (bank 2)
Fuel pressure
Fuel injector
Intake air leaks
Exhaust gas leaks
DTC P2099
A/F sensor 1 (bank 2)
A/F sensor 1 heater
Heated oxygen sensor 2 (bank 2)
Fuel pressure
Fuel injector
Intake air leaks
Exhaust gas leaks
FAIL-SAFENot applicable
DTC Confirmation Procedure
PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following before conducting the next test...
Diagnosis Procedure
CHECK REAR WINDOW DEFOGGER SWITCH
Check rear window defogger switch.
Refer to Component Function Check.
Is the inspection result normal?
YES>>
GO TO 2.
NO>>
Repair or replace the malfunctioning parts.
CHECK REAR WINDOW DEFOGGER RELAY
Check rear window defogger relay...